package com.zkx.blogweb.interceptor;

import com.zkx.blogweb.entity.User;
import org.aopalliance.intercept.Interceptor;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * @author zkx
 */
@Component
public class MyInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //拦截请求
        HttpSession session = request.getSession();
        User user = (User)session.getAttribute("user");
        if(user!=null){
            return true;
        }
        request.setAttribute("msg","请先登入");
        request.getRequestDispatcher("/").forward(request,response);
        return false;


    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}
